The nutrition of farm animals,

Armsby, Henry Prentiss

doi:10.5962/bhl.title.19793

Cited by 84 publications

(44 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Kellner accepted the view that the starch equivalent or fat-producing power of a feeding-stuff remained the same, even though the digestible protein content of the ration varied within fairly wide limits. Armsby (1922), by postulating his netenergy concept, supported this view. Halnan (1942) pointed out that the work of subsequent experimenters has thrown doubt on the soundness of this theory and that many workers have abandoned it and returned to the older conception of expressing feeding standards in terms of digestible nutrients and digestible protein.…”

Section: Protein Requirements and Metabolismsupporting

confidence: 55%

European Conference of the Nutrition Society

Barcroft¹

1947

Proc. Nutr. Soc.

View full text Add to dashboard Cite

Section: Protein Requirements and Metabolismsupporting

confidence: 55%

European Conference of the Nutrition Society

Barcroft¹

1947

Proc. Nutr. Soc.

View full text Add to dashboard Cite

“…For lime (CaO) he gives 20-27 per cent, of the ash (equals 0-152 per cent, in the milk) and for phosphoric acid (P 2 O 5 ) 29-33 per cent, in the ash (equals 0-220 per cent, in the milk). Armsby (2) quotes Van Slyke's average figure of 0-7 per cent for the ash in milk, and gives CaO as 20-0 per cent, and P 2 O 5 as 24-8 per cent, of the ash. Wynter Blyth(3) gives the following average figures:…”

mentioning

confidence: 99%

The composition of milk. Part II: Variation in the percentage of mineral constituents in cow’s milk, and their relationship with the solids not fat and protein content

1927

View full text Add to dashboard Cite

1. 670 samples of the mixed milk from 15 herds were analysed, and the average percentages of total ash, soluble ash, insoluble ash, lime and phosphoric acid are given.2. Tables showing frequency distributions are also given, with the standard deviation, mean and probable error of mean for each constituent determined.3. Various correlations of these constituents with solids not fat and protein have been prepared, and these correlations are illustrated by graphs.It is observed that the total ash falls with the solids not fat until low values of solids not fat are reached, when the ash content appears to rise. This variation is confirmed by a curve illustrating the variation in ash content of samples of individual cow’s milk. Soluble ash rises as the solids not fat falls, but the insoluble ash shows a reverse variation. Lime and phosphoric acid both fall with the solids not fat.

show abstract

“…Při evidenci spotřeby krmiva a kontrole růstu hmotnosti vykrmovaných zvířat lze popsaným modelem kvantifikovat ztráty vyvolané zátěžovými faktory prostředí a identifikovat jejich intenzitu již v průběhu výkrmu. Popsaná interpretace výpočtu netto energie (NE) z při-jatého množství krmné směsi a její dělení na netto energii, spotřebovanou na záchovu (NEm) a netto energii produkce (NEp) pro tvorbu přírůstku je v souladu s názory Kleibera (1961, s. 266-281) který interpretuje definici Armsbyho (Armsby, Fries 1915, Armsby 1922: "Netto energie je část metabolizovatelné energie, která zbývá po odečtení kalorigenního účinku přijaté potravy od metabolizovatelné energie". Při přepočtu výsledků Armsbyho pokusů Kleiber (1961) stanovil, že netto energie (NE) vzniká z přijaté metabolizovatelné energie (PME) s účin-ností 54-55 %.…”

Section: Diskuseunclassified

Modeling the pigs body mass growth and the stressing factors impact on the daily feed intake

Novák¹,

Zeman²,

Novák³

et al. 2014

Acta Univ. Agric. Silvic. Mendelianae Brun.

View full text Add to dashboard Cite

NOVáK, L., ZEMAN, L., NOVáK, P., MAREŠ, P.: Modeling the pigs body mass growth and the stressing factors impact on the daily feed intake. Acta univ. agric. et silvic. Mendel. Brun., 2005, LIII, No. 5, pp. 105-116 Modeling the body mass growth in fattened pigs by means of the exponential growth function enables to simulate the growth curve from three constants of the gender's, or the hybrid's combination, represented by their body mass phenotype: body mass at birth (G0) genetic limit of body mass (GLi) and the maximum body mass increase reached in the inflexion of the growth curve (dG max). However the expression of animal´s genome to its body mass phenotype depends on the amount and quality of the feed mixture consumed and mainly on the fact how much of the net energy gained remains left for production (NEp), after the mandatory needs of the body maintenance functions are saturated. Only this amount of net energy for production may be deposited into the proteins and fats of the body mass increase (dG/ dt). The net energy for production (NEp) is restricted; if a greater amount of net energy gained (NE) is spend, for compensation of the stressors impact (NE stx). The sum of particular stressor's action is expressed by stressor's index (STX) and indicates the proportional increase of net energy (NE) spend for the maintenance requirement of the animal (NEm). This contribution extends, the classic method of modeling the body mass growth, by the simultaneous modeling of the daily feed mixture intake (DFI) with the content of metabolizable energy (SMEF). The daily feed intake is calculated with respect to the impact of stressors on the net energy consumption. The setting of the model automatically increases the amount of the daily feed intake, so that the adequate amount of net energy for production will not be disturbed. The basic equation for the appropriate daily feed intake sounds as followDetails for calculation, of the net energy for production (NEp) from the input values of the body mass phenotype (G0, GLi, dG max), the content of the metabolizable energy in the feed (SMEF) and of the stressors index value (STX), are described. The validation of the method developed has been approved using the experimental data gained in the fattening of 33 pigs, both sexes, of PIC hybrid combination. Fenotyp hmotnosti prasat je projevem exprese genomu zvoleného plemene nebo hybridní kombinace. V předchozím sdělení (Novák, L. et al., 2004), bylo dokumentováno, že průběh růstu hmotnosti vykrmovaných prasat je charakterizován fenotypem hmotnosti vyjádřeným porodní hmotností, (G0, kg), gene-

show abstract

The nutrition of farm animals,

Cited by 84 publications

References 0 publications

European Conference of the Nutrition Society

European Conference of the Nutrition Society

The composition of milk. Part II: Variation in the percentage of mineral constituents in cow’s milk, and their relationship with the solids not fat and protein content

Modeling the pigs body mass growth and the stressing factors impact on the daily feed intake

Contact Info

Product

Resources

About