Deck 7

Question 1

The adverse effect of increasing NL in the feed ration on fertility manifests itself:

Question 2

The coagulation activity of mallow during the period of milk nutrition is decisively influenced by:

Answer 2

The quality of the formed casein precipitate

Question 3

The digestibility of the organic matter of the feed mixture for pigs is directly related to the content and chemical nature of the fiber in the feed. This relationship is expressed by Axelson’s equation, where an increase in fibre in dry matter KD by 1% leads to a decrease in the digestibility of organic matter by:

Question 4

Admission of heifers is carried out:

Question 5

What is characteristic of myodystrophy in lambs?

Answer 5

Deficient supply of natural antioxidants (vit E and selenium) in the feed ration of highly pregnant and lactating sheep, with a consequent low content of these substances in the colostrum and milk of ewes.
Limited placental transfer of vit E from mother to fetus causes lambs to be born with low levels.
Low Se causes white muscle disease.

Question 6

Low fat syndrome:

Answer 6

Is manifested by a concentrated type of feed ration with a high proportion of grains and a high content of unsaturated fats in the feed ration of dairy cows.
High content of polyunsaturated fatty acids in daily feed ration.
The content of trans-conjugated linoleic acid (CLA-C18: 2 trans-10-cis-12) synthesized in the rumen increases, due to incomplete biohydrogenation when the pH drops.

Question 7

Pathogenesis of grazing tetanus:

Answer 7

Low concentration of Mg and water-soluble carbohydrates, and a high proportion of N and K, organic acids and higher fatty acids.
High soil moisture and expulsion of air from the soil at higher wetting. Low availibility of soil oxygen increases the concentration of K and reduces Ca and Mg.

Question 8

Addition of anionic salts to the feed ration before parturition:

Answer 8

Increases sensitivity of the bone tissue for the release of Ca from bones to maintain normocalcaemia after birth

Question 9

The feeding regimen of sows during pregnancy should ensure an average gain:

Question 10

The method of ileal digestibility of amino acids in feed is used for:

Answer 10

Quantifies the difference between the amount taken and the absorption of amino acids at the level of the duodenum and jejenum.
Difference between the feed intake in the distal part of the ileum, where the intestinal content is taken through the fistula.

Question 11

Nutritional causes for the decrease in fat content in milk (confirmed by TMR analysis):

Answer 11

Insufficient supply of nutrients to the mammary gland for fat synthesis, or increased supply of glucose for lactose synthesis and the amount of milk produced.
Low rumen production of acetic acid –> high proportion of starch over 40% and limited proportion NDF at 28% in DM –> reduced digestibility of NDF – shift in VFA –> decreased acetic acid content + increased propionic acid

Question 12

Zinc in relation to reproduction manifests itself:

Question 13

Prenatal development and growth of foetal skeletal muscles (myogenesis) is determined:

Question 14

Increased content of fat in milk in the postpartum phase is in:

Answer 14

In the postpartum phase in obese dairy cows in association with increased lipomobilisation and ketosis.

Question 15

In the case of nutrition-related disorders of the GIT, sheep suffer from:

Question 16

Why is fecal digestibility also referred to as ‘‘apparent digestibility’’?

Answer 16

Microbial proteins affected by colonic fermentation are also present in faeces
Endogenous amino acids from secreted secretions and the epithelium of digestive tract are also represented in faeces