Effects of varying levels of dietary protein and net energy on growth performance, nitrogen balance and faecal characteristics of growing-finishing pigs

Zhao, Yijie; Tian, Gang; Chen, Shuai; Zheng, Ping; Yu, Jie; He, Jun; Mao, Xiangbing; Yu, Bing

doi:10.1590/rbz4820180021

Cited by 18 publications

(33 citation statements)

References 34 publications

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“…In the present study, as the dietary CP levels increased, a decreased serum TP was observed during the 5- to 10-kg growth stage (14–22% CP), while an increased serum albumin content was observed during the 20- to 30-kg growth stage (10–18% CP). These findings were contrary to those reported by Zhao et al ( 29 ), and the different dietary CP levels could be the reason for this difference.…”

Section: Discussioncontrasting

confidence: 99%

“…Besides, NH 3 -N is a substance that originated from the intestinal microbiota-fermented protein and AAs, and its serum concentration could also reflect the utilization of dietary protein. A lower serum NH 3 -N concentration was found in pigs fed with a lower CP diet ( 28 , 29 ). Therefore, the increased serum UN or NH 3 -N concentration combined with the impaired growth performance in the present study suggested an excessive dietary CP level.…”

Section: Discussionmentioning

confidence: 92%

“…Therefore, the increased serum UN or NH 3 -N concentration combined with the impaired growth performance in the present study suggested an excessive dietary CP level. The serum TP and albumin contents reflect the dietary CP level and the utilization of protein by the animal body, and an increased serum TP content was observed when pigs' protein utilization increased ( 29 , 30 ). In the present study, as the dietary CP levels increased, a decreased serum TP was observed during the 5- to 10-kg growth stage (14–22% CP), while an increased serum albumin content was observed during the 20- to 30-kg growth stage (10–18% CP).…”

Section: Discussionmentioning

confidence: 99%

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Effects of Different Dietary Protein Levels on the Growth Performance, Serum Biochemical Parameters, Fecal Nitrogen, and Carcass Traits of Huanjiang Mini-Pigs

et al. 2021

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The Huanjiang mini-pig is a Chinese local breed and, the optimal dietary crude protein (CP) level for this breed is still unknown. Therefore, the present study was conducted to investigate its optimum dietary CP level upon the growth performance, serum biochemical parameters, fecal nitrogen content, and carcass traits. Three independent trials with 360 pigs were included. A total of 220 pigs (5.32 ± 0.46 kg) were fed ad libitum, either a 14, 16, 18, 20, or 22% CP diet from about 5- to 10-kg (trial 1); 84 pigs (11.27 ± 1.43 kg) were fed either a 12, 14, 16, 18, or 20% CP diet from about 10- to 20-kg (trial 2); and 56 pigs (18.80 ± 2.21 kg) were fed either a 10, 12, 14, 16, or 18% CP diet from about 20- to 30-kg (trial 3). In trial 1, as dietary CP levels increased, the feed-to-gain ratio (F/G) quadratically decreased (p < 0.05) and was minimal at the 18.42% CP level. The average daily feed intake (ADFI) and final body weight (BW) were not affected by dietary CP levels while the fat percentage decreased (p < 0.05). Besides, a linear decrease in slaughter rate (p = 0.06) and a linear increase in bone percentage (p < 0.05), serum urea nitrogen (UN) (P < 0.05), and fecal nitrogen content (p = 0.07) of pigs were observed. In trial 2, as dietary CP levels increased, the average daily gain quadratically increased (p < 0.05) and was maximum at the 16.70% CP level. The slaughter rate linearly decreased (p < 0.05) whereas the skin rate, serum UN, and NH3-N increased (p < 0.05) linearly, as well as fecal nitrogen content (p = 0.06). In trial 3, as dietary CP levels increased, the F/G increased (p < 0.05), while the ADFI and ADG quadratically decreased (p < 0.05) and was maximum at nearly 14.00% CP level. The bone percentage and serum UN increased (p < 0.05) linearly but the slaughter rate decreased (P < 0.05) linearly, and the fecal nitrogen content quadratically decreased (p = 0.07) whereas the albumin increased (p < 0.05) quadratically. Taken together, the optimal dietary CP levels for growth performance of Huanjiang mini-pigs from 5- to 10-kg, 10- to 20-kg, and 20- to 30-kg were 18.42, 16.70, and 14.00%, respectively.

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Section: Discussioncontrasting

confidence: 99%

Section: Discussionmentioning

confidence: 92%

Section: Discussionmentioning

confidence: 99%

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Effects of Different Dietary Protein Levels on the Growth Performance, Serum Biochemical Parameters, Fecal Nitrogen, and Carcass Traits of Huanjiang Mini-Pigs

et al. 2021

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“…In a similar study, Fang et al (2019) reported that feeding of low protein and high energy diet in crossbred (Duroc x Large White Yorkshire x Landrace) weaner pigs improved the growth performance. In another study, Zhao et al (2019) reported that 3.5% decreased in dietary protein than requirement did not affect the growth performance of growing-finishing pigs.…”

Section: Discussionmentioning

confidence: 91%

Effect of feeding different levels of protein and energy of Bureau of Indian Standard specification on production performance of crossbred (HS x GH) grower pig

Barman¹,

Banik²,

Thomas³

et al. 2020

ijah

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Present research work was conducted to study the effect of different levels of protein and energy on growth and nutrient utilization in crossbred grower pigs. Twenty four crossbred grower pigs were divided into four groups of six each. Animals were fed four different rations containing 100% of protein and energy of Bureau of Indian Standard (BIS), 100% of protein and 75% of energy of BIS, 75% of protein and 100% of energy of BIS, and 75% of protein and 75% of energy of BIS in T 1 , T 2 , T 3 and T 4 groups, respectively to observe its effect on growth and nutrient utilization in crossbred grower pig. The pigs were fed on the experimental grower rations twice daily. Crude protein (CP) content (%) of the ration was ranged from 14.10±0.32 to 18.71±0.54. The average dry matter (DM) intake (g/day) was similar across all the groups which were ranged from 1357.0±5.4 to 1362.5. The majority of the nutrient digestibility coefficients were found higher (P<0.01) in T 3 group followed by T 2 , T 1 and T 4 groups. The average body weight gain (g/day) was 395.7±33.1, 383.8±21.1, 379.9±12.6 and 375.3±46.0 in T 1, T 2, T 3 and T 4 groups, respectively. The cost of production per kg live weight (Rs.) was ranged from 55.30±1.7 in T 3 to 64.90±8.80 in T 4 group and the values of others were within this range. The cost of production per kg live weight was lowest (P<0.05) in T 3 in comparison to other groups. It is concluded that ration containing 75% of protein and 100% of energy specified by BIS, can meet the nutritional requirement of grower pig without affecting the growth, feed conversion ratio (FCR) and economy of feeding.

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“…Зменшення вмісту харчового білка на 3,5 % не чинить несприятливого впливу на продуктивність росту та засвоюваність поживних речовин поросят [17].…”

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Продуктивні Якості Відгодівельного Молодняку Свиней За Різного Рівня Протеїну В Раціоні

Povod¹,

Михалко²,

Shpetnyi³

et al. 2021

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В статті порівняно інтенсивність росту, збереженість, конверсію корму та економічну ефективність відгодівлі свиней за додаткового введення 0,5% загального протеїну в комбікорм «старт -15-30» для поросят другої фази доро-щування, «гравер-30-60» для підсвинків на першій стадії відгодівлі з живою масою від 31 до 60 кг, «фінішер 60-90» та «фінішер 90-130» для гібридних свиней від помісних свиноматок ірландської великої білої породи та кнурів ірландського ландраса, які були запліднені спермою кнурів термінальної синтетичної лінії «Максгро» (♀ВБ × Л) × ♂Мг) на заключній стадії мультифазної відгодівлі в кожний з періодів дорощування і відгодівлі. Встановлено, що додаткове введення 0,5% загального протеїну в комбікорм сприяло в період відгодівлі кращій на 1,0% збереженості поголів’я, вищми на 41 г сере-дньодобовим приростам і, як результат, більшій на 2,7 кг масі тварин на день реалізації. За час відгодівлі вони витра-тили менше на 240 кг стартерного комбікорму, на 640 кг граверного і на 750 кг фінішного корму рецепту 60-90. Водно-час вони спожили на 890 кг більш дешевого фінішеру 90-120. Загальна кількість спожитого корму виявилась меншою на 740 кг у тварин дослідної групи, але за рахунок різниці в ціні різних марок комбікорму його вартість була вищою для цієї групи на 9583,8 грн. В цілому конверсія корму у тварин дослідної групи виявилась кращою на 0,13 кг в порівнянні з анало-гами контрольної групи. За комплексом ознак відгодівельної продуктивності свині дослідної групи мали індекс відгодіве-льних якостей на 4,0 бали вищим в порівнянні з тваринами контрольної групи. За рахунок більш низької ціни фінішного комбікорму 90-120 та вищої інтенсивності росту свиней в цей період, кормова собівартість 1 кг приросту свиней, які споживали додатково 0,5% загального протеїну, виявилась на 0,49 грн. нижчою в порівнянні з тваринами контрольної групи. Також на 0,48 грн. була нижчою і собівартість 1 кг приросту у тварин дослідної групи.

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Effects of varying levels of dietary protein and net energy on growth performance, nitrogen balance and faecal characteristics of growing-finishing pigs

Cited by 18 publications

References 34 publications

Effects of Different Dietary Protein Levels on the Growth Performance, Serum Biochemical Parameters, Fecal Nitrogen, and Carcass Traits of Huanjiang Mini-Pigs

Effects of Different Dietary Protein Levels on the Growth Performance, Serum Biochemical Parameters, Fecal Nitrogen, and Carcass Traits of Huanjiang Mini-Pigs

Effect of feeding different levels of protein and energy of Bureau of Indian Standard specification on production performance of crossbred (HS x GH) grower pig

Продуктивні Якості Відгодівельного Молодняку Свиней За Різного Рівня Протеїну В Раціоні

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