The impact of dietary phosphorus levels on growth, slaughter, and digestive metabolism in growing sheep
Phosphorus (P) pollution from livestock farming poses significant environmental challenges, necessitating efficient P utilization. This study systematically investigated the effects of varying dietary P levels on growth, slaughter performance, nutrient digestion, and metabolism in Yunnan Semi-fine W...
Saved in:
| Main Authors: | , , , , , , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Frontiers Media S.A.
2025-02-01
|
| Series: | Frontiers in Veterinary Science |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/fvets.2025.1489948/full |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832086520200167424 |
|---|---|
| author | Shoupei Zhao Xiaojun Ni Jia Zhou Xiaoqi Zhao Xiao Wen Xiaolin Wang Mingyu Cao Yanfei Zhao Chong Shao Lianghao Lu Yuanyuan Chen Bao Zhang Huaming Yang Bai Xue Guobo Quan |
| author_facet | Shoupei Zhao Xiaojun Ni Jia Zhou Xiaoqi Zhao Xiao Wen Xiaolin Wang Mingyu Cao Yanfei Zhao Chong Shao Lianghao Lu Yuanyuan Chen Bao Zhang Huaming Yang Bai Xue Guobo Quan |
| author_sort | Shoupei Zhao |
| collection | DOAJ |
| description | Phosphorus (P) pollution from livestock farming poses significant environmental challenges, necessitating efficient P utilization. This study systematically investigated the effects of varying dietary P levels on growth, slaughter performance, nutrient digestion, and metabolism in Yunnan Semi-fine Wool Sheep during the growth phase. Forty-five sheep (30.33 ± 0.56 kg) were randomly assigned to five dietary P levels (0.40, 0.51, 0.68, 0.82, and 0.97%) over a 44-day trial, including a 14-day pre-feeding and 30-day formal trial period. Digestibility trials were conducted on days 22–27, and selected sheep were slaughtered for detailed analysis. Results showed no significant effects of dietary P on daily weight gain, feed-to-gain ratio, or organ indices (p > 0.05). However, dry matter intake, liver, and lung weights decreased linearly with increasing P levels (p < 0.05). Carcass traits such as left half carcass rate and net rib rate varied significantly (p < 0.05), showing quadratic trends. P levels also affected P, calcium, protein, and energy metabolism, as well as apparent digestibility of acid detergent fiber (p < 0.05). Using endogenous loss and comparative slaughter methods, the P maintenance requirement was determined as: Retained p = 0.5436 × Intake P – 0.0614 (R2 = 0.83, p < 0.01). P requirements for growth were modeled as: P (g/kg EBW) = 30.95772 × EBW – 0.5031. The recommended dietary P level was 0.40%, with maintenance and growth requirements of 0.06 g/EBW and 5.34–6.19 g/kg EBW, respectively, providing a foundation for P reduction strategies. |
| format | Article |
| id | doaj-art-8fd17d37df4848639ab1b23d4c1e2310 |
| institution | Kabale University |
| issn | 2297-1769 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Veterinary Science |
| spelling | doaj-art-8fd17d37df4848639ab1b23d4c1e23102025-02-06T15:00:24ZengFrontiers Media S.A.Frontiers in Veterinary Science2297-17692025-02-011210.3389/fvets.2025.14899481489948The impact of dietary phosphorus levels on growth, slaughter, and digestive metabolism in growing sheepShoupei Zhao0Xiaojun Ni1Jia Zhou2Xiaoqi Zhao3Xiao Wen4Xiaolin Wang5Mingyu Cao6Yanfei Zhao7Chong Shao8Lianghao Lu9Yuanyuan Chen10Bao Zhang11Huaming Yang12Bai Xue13Guobo Quan14Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, ChinaYunnan Animal Science and Veterinary Institute, Kunming, ChinaChongqing Academy of Animal Sciences, Chongqing, ChinaYunnan Animal Science and Veterinary Institute, Kunming, ChinaInstitute of Animal Nutrition, Sichuan Agricultural University, Chengdu, ChinaInstitute of Animal Nutrition, Sichuan Agricultural University, Chengdu, ChinaInstitute of Animal Nutrition, Sichuan Agricultural University, Chengdu, ChinaInstitute of Animal Nutrition, Sichuan Agricultural University, Chengdu, ChinaInstitute of Animal Nutrition, Sichuan Agricultural University, Chengdu, ChinaInstitute of Animal Nutrition, Sichuan Agricultural University, Chengdu, ChinaInstitute of Animal Nutrition, Sichuan Agricultural University, Chengdu, ChinaInstitute of Animal Nutrition, Sichuan Agricultural University, Chengdu, ChinaInstitute of Animal Nutrition, Sichuan Agricultural University, Chengdu, ChinaInstitute of Animal Nutrition, Sichuan Agricultural University, Chengdu, ChinaYunnan Animal Science and Veterinary Institute, Kunming, ChinaPhosphorus (P) pollution from livestock farming poses significant environmental challenges, necessitating efficient P utilization. This study systematically investigated the effects of varying dietary P levels on growth, slaughter performance, nutrient digestion, and metabolism in Yunnan Semi-fine Wool Sheep during the growth phase. Forty-five sheep (30.33 ± 0.56 kg) were randomly assigned to five dietary P levels (0.40, 0.51, 0.68, 0.82, and 0.97%) over a 44-day trial, including a 14-day pre-feeding and 30-day formal trial period. Digestibility trials were conducted on days 22–27, and selected sheep were slaughtered for detailed analysis. Results showed no significant effects of dietary P on daily weight gain, feed-to-gain ratio, or organ indices (p > 0.05). However, dry matter intake, liver, and lung weights decreased linearly with increasing P levels (p < 0.05). Carcass traits such as left half carcass rate and net rib rate varied significantly (p < 0.05), showing quadratic trends. P levels also affected P, calcium, protein, and energy metabolism, as well as apparent digestibility of acid detergent fiber (p < 0.05). Using endogenous loss and comparative slaughter methods, the P maintenance requirement was determined as: Retained p = 0.5436 × Intake P – 0.0614 (R2 = 0.83, p < 0.01). P requirements for growth were modeled as: P (g/kg EBW) = 30.95772 × EBW – 0.5031. The recommended dietary P level was 0.40%, with maintenance and growth requirements of 0.06 g/EBW and 5.34–6.19 g/kg EBW, respectively, providing a foundation for P reduction strategies.https://www.frontiersin.org/articles/10.3389/fvets.2025.1489948/fullsheepgrowth performanceslaughtering measurementsmetabolismphosphorus requirement |
| spellingShingle | Shoupei Zhao Xiaojun Ni Jia Zhou Xiaoqi Zhao Xiao Wen Xiaolin Wang Mingyu Cao Yanfei Zhao Chong Shao Lianghao Lu Yuanyuan Chen Bao Zhang Huaming Yang Bai Xue Guobo Quan The impact of dietary phosphorus levels on growth, slaughter, and digestive metabolism in growing sheep Frontiers in Veterinary Science sheep growth performance slaughtering measurements metabolism phosphorus requirement |
| title | The impact of dietary phosphorus levels on growth, slaughter, and digestive metabolism in growing sheep |
| title_full | The impact of dietary phosphorus levels on growth, slaughter, and digestive metabolism in growing sheep |
| title_fullStr | The impact of dietary phosphorus levels on growth, slaughter, and digestive metabolism in growing sheep |
| title_full_unstemmed | The impact of dietary phosphorus levels on growth, slaughter, and digestive metabolism in growing sheep |
| title_short | The impact of dietary phosphorus levels on growth, slaughter, and digestive metabolism in growing sheep |
| title_sort | impact of dietary phosphorus levels on growth slaughter and digestive metabolism in growing sheep |
| topic | sheep growth performance slaughtering measurements metabolism phosphorus requirement |
| url | https://www.frontiersin.org/articles/10.3389/fvets.2025.1489948/full |
| work_keys_str_mv | AT shoupeizhao theimpactofdietaryphosphoruslevelsongrowthslaughteranddigestivemetabolismingrowingsheep AT xiaojunni theimpactofdietaryphosphoruslevelsongrowthslaughteranddigestivemetabolismingrowingsheep AT jiazhou theimpactofdietaryphosphoruslevelsongrowthslaughteranddigestivemetabolismingrowingsheep AT xiaoqizhao theimpactofdietaryphosphoruslevelsongrowthslaughteranddigestivemetabolismingrowingsheep AT xiaowen theimpactofdietaryphosphoruslevelsongrowthslaughteranddigestivemetabolismingrowingsheep AT xiaolinwang theimpactofdietaryphosphoruslevelsongrowthslaughteranddigestivemetabolismingrowingsheep AT mingyucao theimpactofdietaryphosphoruslevelsongrowthslaughteranddigestivemetabolismingrowingsheep AT yanfeizhao theimpactofdietaryphosphoruslevelsongrowthslaughteranddigestivemetabolismingrowingsheep AT chongshao theimpactofdietaryphosphoruslevelsongrowthslaughteranddigestivemetabolismingrowingsheep AT lianghaolu theimpactofdietaryphosphoruslevelsongrowthslaughteranddigestivemetabolismingrowingsheep AT yuanyuanchen theimpactofdietaryphosphoruslevelsongrowthslaughteranddigestivemetabolismingrowingsheep AT baozhang theimpactofdietaryphosphoruslevelsongrowthslaughteranddigestivemetabolismingrowingsheep AT huamingyang theimpactofdietaryphosphoruslevelsongrowthslaughteranddigestivemetabolismingrowingsheep AT baixue theimpactofdietaryphosphoruslevelsongrowthslaughteranddigestivemetabolismingrowingsheep AT guoboquan theimpactofdietaryphosphoruslevelsongrowthslaughteranddigestivemetabolismingrowingsheep AT shoupeizhao impactofdietaryphosphoruslevelsongrowthslaughteranddigestivemetabolismingrowingsheep AT xiaojunni impactofdietaryphosphoruslevelsongrowthslaughteranddigestivemetabolismingrowingsheep AT jiazhou impactofdietaryphosphoruslevelsongrowthslaughteranddigestivemetabolismingrowingsheep AT xiaoqizhao impactofdietaryphosphoruslevelsongrowthslaughteranddigestivemetabolismingrowingsheep AT xiaowen impactofdietaryphosphoruslevelsongrowthslaughteranddigestivemetabolismingrowingsheep AT xiaolinwang impactofdietaryphosphoruslevelsongrowthslaughteranddigestivemetabolismingrowingsheep AT mingyucao impactofdietaryphosphoruslevelsongrowthslaughteranddigestivemetabolismingrowingsheep AT yanfeizhao impactofdietaryphosphoruslevelsongrowthslaughteranddigestivemetabolismingrowingsheep AT chongshao impactofdietaryphosphoruslevelsongrowthslaughteranddigestivemetabolismingrowingsheep AT lianghaolu impactofdietaryphosphoruslevelsongrowthslaughteranddigestivemetabolismingrowingsheep AT yuanyuanchen impactofdietaryphosphoruslevelsongrowthslaughteranddigestivemetabolismingrowingsheep AT baozhang impactofdietaryphosphoruslevelsongrowthslaughteranddigestivemetabolismingrowingsheep AT huamingyang impactofdietaryphosphoruslevelsongrowthslaughteranddigestivemetabolismingrowingsheep AT baixue impactofdietaryphosphoruslevelsongrowthslaughteranddigestivemetabolismingrowingsheep AT guoboquan impactofdietaryphosphoruslevelsongrowthslaughteranddigestivemetabolismingrowingsheep |