Influence of Level of Total Feed Intake on Digestibility, Rate of Passage and Energetic Efficiency of Reproduction in Swine

Parker, J. W. G.; Clawson, A. J.

doi:10.2527/jas1967.263485x

Cited by 35 publications

(17 citation statements)

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“…The reduction in apparent digestibility with increase in feed intake observed in our experiment agrees with the findings of Parker and Clawson (1967). In their study, increasing the feed intake of multiparous, lactating sows from 2.7 to 8.1 kg/d decreased the coefficient of apparent DM digestibility from 89 to 85 due to an increase in the rate of passage of ingesta through the gastrointestinal tract.…”

Section: Discussionsupporting

confidence: 82%

Feeding lactating primiparous sows to establish three divergent metabolic states: II. Effect on nitrogen partitioning and skeletal muscle composition.

Clowes

Williams

Baracos

et al. 1998

Journal of Animal Science

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Section: Discussionsupporting

confidence: 82%

Feeding lactating primiparous sows to establish three divergent metabolic states: II. Effect on nitrogen partitioning and skeletal muscle composition.

Clowes

Williams

Baracos

et al. 1998

Journal of Animal Science

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“…This is particularly so between the extremes of diets, i.e. The results of Parker and Clawson (1967) do, however, support this hypothesis although their results, in common with those from all the previous-mentioned workers, were obtained when various nutritional studies, unrelated to cereal processing, were undertaken. Again, however, the relatively large difference between the retention time of diet O compared with diets T and S suggests (as in the case of some of the digestibility results), that there may have been a disproportionate difference in particle size between diet O and the diets T and S, which could have affected this.…”

Section: Discussionmentioning

confidence: 55%

Some effects of including differently processed barley in the diet of the growing pig: 1. Growth rate, food conversion efficiency, digestibility and rate of passage through the gut

Lawrence

1970

Anim. Sci.

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SUMMARY1. An experiment was conducted in which the effects on growth rate, food conversion efficiency, digestibility and rate of passage through the gut of diets containing 85% of differently processed barley, fed to growing pigs, were studied. Five different processing treatments were compared with the inclusion of the grain in the whole (unground) form (diet W). The processing treatments were: grinding through (1·56 mm), (4·68 mm) and (9·36 mm) screens (diets O, T and S respectively); cold rolling (diet R) and coarse crimping (diet C).2. Differences in growth rate and food conversion efficiency between diets O, T, S and R were small and not significant with a slight overall superiority evidenced for diet R over the other three. Compared with these results those of diets C and W were inferior, significantly so for both diets in growth rate but for diet W only in food conversion efficiency. Diet C was superior to diet W in both of these parameters (significantly so for growth rate).3. The overall digestibility of diet W was significantly poorer and the rate of passage through the gut faster than for any of the other diets. Diet O was retained in the gut significantly longer than any of the other diets and gave the highest coefficient of apparent digestibility for both the ether extract and crude fibre fractions of the diet.

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“…Experimental results reported by Salmon-Legagneur (1965), Parker and Clawson (1967) and Lodge (1969) suggest that energy utilization is more efficient under such a system. Although feeding during pregnancy has been standardized to a large extent in recommendations from several countries, there is little agreement on the influence of energy level in lactation on sow performance.…”

Section: Introductionmentioning

confidence: 79%

The response of lactating sows and their litters to different dietary energy allowances. 1. Milk yield and composition, reproductive performance of sows and growth rate of litters

O’Grady

Elsley²,

MacPherson³

et al. 1973

Anim. Sci.

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SUMMARYTwenty-four gilts were used at each of two centres in an experiment designed to examine the effects of dietary energy intake during lactation on yield and composition of sows' milk and the growth of their litters. Gestation feed intake was standardized at 2 kg per day supplying 6·28 Meal digestible energy (DE) and 280 g crude protein. The energy levels fed during lactation ranged from 12·2 to 18·25 Meal DE per day for gilts, 12·9 to 19·6 Meal DE per day for second parity and from 13·2 to 20·25 Meal DE per day for third parity sows. Daily crude protein intake and amino acid balance ofthe protein were kept constant.In the first lactation milk yield and composition and growth of litters were not influenced by dietary energy intake. In the second lactation milk yield was depressed by lower energy intakes and this was reflected in litter weights at 21 though not at 42 days. In the third lactation lower energy intakes seriously depressed milk yield and daily output of milk nutrients. On the lowest level of energy, milk yield was 32% lower at day 24 and 20% lower at day 41 of lactation than on the highest energy level. The corresponding depressions in litter weights were 17·2 and 13·5% at 21 and 42 days respectively.

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Influence of Level of Total Feed Intake on Digestibility, Rate of Passage and Energetic Efficiency of Reproduction in Swine

Cited by 35 publications

References 0 publications

Feeding lactating primiparous sows to establish three divergent metabolic states: II. Effect on nitrogen partitioning and skeletal muscle composition.

Feeding lactating primiparous sows to establish three divergent metabolic states: II. Effect on nitrogen partitioning and skeletal muscle composition.

Some effects of including differently processed barley in the diet of the growing pig: 1. Growth rate, food conversion efficiency, digestibility and rate of passage through the gut

The response of lactating sows and their litters to different dietary energy allowances. 1. Milk yield and composition, reproductive performance of sows and growth rate of litters

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