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Cottonseed meal protein hydrolysate influences growth performance, carcass characteristics, serum biochemical indices, and intestinal morphology in yellow-feather broilers.
Zhang, Xiaoyang; Nan, Shanshan; Zhang, Li; Chen, Cheng; Zhang, Wenju; Nie, Cunxi.
Afiliación
  • Zhang X; College of Animal Science and Technology, Shihezi University, Shihezi, China.
  • Nan S; College of Animal Science and Technology, Shihezi University, Shihezi, China.
  • Zhang L; College of Animal Science and Technology, Shihezi University, Shihezi, China.
  • Chen C; College of Animal Science and Technology, Shihezi University, Shihezi, China.
  • Zhang W; College of Animal Science and Technology, Shihezi University, Shihezi, China.
  • Nie C; College of Animal Science and Technology, Shihezi University, Shihezi, China.
J Anim Physiol Anim Nutr (Berl) ; 2024 Jun 02.
Article en En | MEDLINE | ID: mdl-38825860
ABSTRACT
This study investigated the effects of cottonseed meal protein hydrolysate (CPH) on the growth performance, carcass characteristics, serum biochemical indices, intestinal morphology, and enzyme activities of yellow-feather broilers. We randomly divided 240 chicks into four groups, each with six replicates a basal diet with 0% (CON), 1% (LCPH), 3% (MCPH), or 5% (HCPH) CPH. The trail spanned 63 days and included three phases Days 1-21, 22-42, and 43-63. Increased average daily gain (ADG) and decreased ratio of feed to gain (F/G) with LCPH were observed in 21-day-old broilers (P < 0.05). MCPH led to higher ADG and average daily feed intake (ADFI) in 42-day-old broilers (P < 0.05). Additionally, CPH supplementation resulted in increased dressing percentage, percentage of half-eviscerated yield, percentage of eviscerated yield, breast muscle rate, and leg muscle rate were observed (P < 0.05) with diet. The serum levels of total protein (TP), high-density lipoprotein cholesterol (HDL-C), calcium (Ca), and phosphorus (P) were enhanced, and blood urea nitrogen (BUN) and triglyceride (TG) levels decreased with diet and CPH (P < 0.05). CPH increased the length of the jejunum and ileum and the weight of the duodenum, jejunum, and ileum in 21-day-old broilers (P < 0.05). Alterations in the duodenal villus structure in broilers occurred on Days 21 and 42, and the CPH groups performed better; however, a similar change occurred in the jejunum on Days 42 and 63 (P < 0.05). MCPH and HCPH enhanced trypsin activity in the duodenum of 21-day-old and 63-day-old broilers (p < 0.05). Chymotrypsin activity increased (P > 0.05) in the duodenum of 63-day-old broilers fed MCPH. Lipase activity increased (P < 0.05) in the jejuna of 21-day-old broilers treated with HCPH. CPH increased trypsin activity in the ilea of 21-day-old broilers (P < 0.05). These results showed that CPH influenced the growth performance, carcass characteristics, serum biochemical indices, and intestinal morphology of yellow-feather broilers, which are related to growth stage. The recommended CPH level in broilers is 1% before 21 days of age and 3% after 21 days of age.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: J Anim Physiol Anim Nutr (Berl) Asunto de la revista: CIENCIAS DA NUTRICAO / FISIOLOGIA / MEDICINA VETERINARIA Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Alemania
Texto completo
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Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: J Anim Physiol Anim Nutr (Berl) Asunto de la revista: CIENCIAS DA NUTRICAO / FISIOLOGIA / MEDICINA VETERINARIA Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Alemania